Home / 5,030.40-7,540.20-1,909.20

Finding the Fourth Proportional to 5,030.40, 7,540.20 and 1,909.20

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Solution

The fourth proportional to 5,030.40, 7,540.20 and 1,909.20 is: 2,861.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,030.40 : 7,540.20 = 1,909.20 : x
  2. Step 2: Convert to fraction form
    5,030.40/7,540.20 = 1,909.20/x
  3. Step 3: Cross multiply
    5,030.40x = 7,540.20 × 1,909.20
  4. Step 4: Simplify right side
    5,030.40x = 14,395,749.84
  5. Step 5: Solve for x
    x = 14,395,749.84/5,030.40
  6. Step 6: Final answer
    x = 2,861.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.